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Failure Mode of Foundation Under Combined Loadings
Qi-yi Zhang School of architectural and civil Engineering, Qingdao Agricultural University, Qingdao, 266109, China
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ABSTRACT |
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Failure Mode of Foundation Under Combined Loadings
Qi-yi Zhang School of architectural and civil Engineering, Qingdao Agricultural University, Qingdao, 266109, China
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ABSTRACT |
Compared with the symmetry failure mode of Prandtl, the failure mode of foundation under combined loading is asymmetry and complex. Based on limit equlibrium method and numerical analysis software ABAQUS, the failure modes of foundation under combined loading are investigated in detail. The conclusion shows that the asymmetry of failure envelope is related to failure modes of foundation, the forward-tilted scoop failure mode and backward-tilted scoop failure mode can interpret the asymmetry of failure envelope well. The concept of elastic-core beneath the effective width of footing suggested in this paper can describe the failure mode when the limit moment loading is reached. The discrimination equation of limit moment loading can give theoretical reference to study further failure mode of foundation and engineering application.
Keywords: ABAQUS; combined loading; failure envelope; forward-tilted scoop failure mode; backward-tilted scoop failure mode; elastic-core
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